Secrets of

Making a spaceship to visit other planets has been difficult, but how to make it more difficult for people to live on it.

A journey, even to the nearest stars, takes a decade or even hundreds of years, so it is possible for " generation " to spawn on the spaceship. However, scientists are not even sure if humans can give birth safely in a gravityless environment.

Delegates attending the US-sponsored "100-Year Spaceship Workshop " discussed a lot of the technologies and strategies needed to plan an interplanetary journey. But as MIT's Dan Buckland shared on Space.com , the link between having babies and gravity is still a mystery that scientists cannot answer.

Up to this point, humans have not even been able to take people anywhere outside the moon (which is still the achievement itself) in the solar system, let alone the stars 4 years from Earth. the light. Each light year is equivalent to about 10 trillion km.

"At such a long distance, the ships must have a very large size and very high self-defense ability. But we don't have such technologies now," said biologist Athena Andreadis of the Medical University. Massachusetts sharing with Space . Unless scientists invented the feasible way to recreate gravity on space ships, otherwise such a journey would be extremely difficult and exhausting, even dangerous. Gravity living too long will cause the body to be damaged, blood loss, muscle atrophy, micronutrient in the bone dissolve and vision weakens.

"That story" in space

The effects of non-gravity on the fetus are even more severe. Fetal development, even nerve functions, can be destroyed. The baby's body and bones can develop completely differently in a zero gravity environment.

Then the "forest sink" is also a problem. "Birth when gravity = 0 means disaster, because gravity helps you a lot. You rely entirely on your baby's weight, " said Mrs. Andreadis.

Even how to get a baby is not easy."Sex is extremely difficult because you have no traction. You will constantly hit the wall. Moreover, if there is no contact, rubbing, your emotions will be significantly reduced. Finally, tell Even when people are able to conceive and give birth successfully in space, a multi-generational journey also contains countless other challenges, aside from the side effects of lack of gravity on the body, The astronauts are very vulnerable to disease while the conditions for treatment are minimal, and they will need psychological treatment because of being stuck too long inside the cramped ship.

The prospect of landing on "destination" - another planet (with the assumption of being alive on earth) does not mean that the challenge is over. No planet is exactly the same as Earth, so we will have to build an dome with an Earth-like environment to reside in for the first time, or transform that planet completely into an Earth. 2. This plan is criticized by many people because it is impossible to be "rape" and unsustainable.

A more feasible option is to alter the genes of astronauts so that they can withstand new environments. Of course, this process will be very complicated and lengthy, can create a second generation quite different from the humans on Earth.